Re: General 5-Star Build - Fast 50cc Single-speed

Mikey Antonakakis /
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Chapter 10 - Scratch-built Pipe, Round 1

Some time ago, circa 2014, I built a rolled-cone pipe for a Suzuki K15. 26-gauge mild steel, thin enough to cut with tin-snips (0.01875" or 0.47mm) and roll by hand on a table with a piece of round stock. Main purpose of that project was to force myself to improve my non-existent TIG skills. Ended up with this, has a tapered header btw:

10200381309191086.jpg

For the General, I intend to do the same. Since it's a more racy-looking bike than the K15 was, I hope to take some inspiration from road race bikes - so either a simple swoop downwards under the engine, or perhaps a sort-of under-the-seat exhaust exit.

Mocked up a first iteration in paper, copying the dimensions of the Doma pipe I've currently got mounted on the bike:

IMG_20190814_145406.jpg
IMG_20190814_154529.jpg

This time around, I'm planning to use 22ga steel for a little more durability. Thin is good for a single speed - pipe temperature changes more rapidly. It will cool down at a stop, acting like a longer pipe, and heat up quicker once you get going, acting like a shorter pipe. It might not make a huge difference, but certainly won't hurt, at least as a thought exercise. EngMod has the ability to model this (pipe wall temperature), so I may run it through the sim to see if I'm assuming correctly.

This particular pattern, though, isn't exactly what I was going for. To clarify, the idea is to make it end-bleed, and for this layup, the idea was to end up with a semi-under-seat exit. Having since built the footrests, though, they are very convenient for mounting a rear pipe mount, and I like the low-down horizontal stinger/baffle layout that I've got going on with the Doma pipe.

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  General 5-Star Build - Fast 50cc Single-speedTopic by: Mikey Antonakakis Mikey Antonakakis 09/03/19 03:20PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 03:32PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 04:14PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 04:21PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 04:46PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Overpriced Parts Overpriced Parts 09/03/19 05:10PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 05:19PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 06:08PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 06:22PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 06:32PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 06:41PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 06:49PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 06:55PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 06:59PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 07:05PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 07:13PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/03/19 07:43PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Aaron Blair Aaron Blair 09/03/19 09:23PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Johnnie Distefano Johnnie Distefano 09/04/19 12:39PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/04/19 03:44PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Chris Squid Chris Squid 09/04/19 08:25PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: ken gilbert ken gilbert 09/05/19 05:32AM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 11:03AM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 11:23AM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 11:39AM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 11:47AM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 12:07PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 12:19PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 12:25PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 12:32PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 12:37PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 12:43PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Brandon Weiss (Detective brandon to you) Brandon Weiss (Detective brandon to you) 09/05/19 12:44PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 02:17PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: alex . alex . 09/05/19 02:03PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 02:20PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 02:26PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: ken gilbert ken gilbert 09/05/19 02:22PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 02:33PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 02:41PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 03:09PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 03:15PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/05/19 03:47PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/06/19 01:18AM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/06/19 01:46AM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/12/19 11:03PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/14/19 10:21PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Born to be WillD Born to be WillD 09/18/19 07:33PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/18/19 07:49PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Alex Hedrick Alex Hedrick 09/21/19 02:30PM
  Re: General 5-Star Build - Fast 50cc Single-speedRe: Mikey Antonakakis Mikey Antonakakis 09/21/19 10:16PM

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